Module diesel::sql_types

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Expand description

Types which represent a SQL data type.

The structs in this module are only used as markers to represent a SQL type. They should never be used in your structs. If you’d like to know the rust types which can be used for a given SQL type, see the documentation for that SQL type. Additional types may be provided by other crates.

To see which SQL type can be used with a given Rust type, see the “Implementors” section of FromSql.

Any backend specific types are re-exported through this module

Modules

  • Possible values for SqlType::IsNullable
  • Represents the output of numeric operators in SQL

Structs

  • The big integer SQL type.
  • The binary SQL type.
  • The boolean SQL type.
  • The date SQL type.
  • The double precision float SQL type.
  • The float SQL type.
  • The integer SQL type.
  • The interval SQL type.
  • The JSON SQL type. This type can only be used with feature = "serde_json"
  • The nullable SQL type.
  • The arbitrary precision numeric SQL type.
  • The small integer SQL type.
  • The text SQL type.
  • The time SQL type.
  • The timestamp SQL type.
  • The tiny integer SQL type.
  • Query nodes with this expression type do not have a statically at compile time known expression type.

Traits

  • Are both values of IsNull are nullable?
  • A marker trait for accepting expressions of the type Bool and Nullable<Bool> in the same place
  • Represents SQL types which can be used with SUM and AVG
  • Indicates that a SQL type exists for a backend.
  • Converts a type which may or may not be nullable into its not nullable representation.
  • Converts a type which may or may not be nullable into its nullable representation.
  • A type level constructor for maybe nullable types
  • Is one value of IsNull nullable?
  • A marker trait indicating that a SQL type represents a single value, as opposed to a list of values.
  • Marker trait for types which can be used with MAX and MIN
  • A marker trait for SQL types
  • Information about how a backend stores metadata about given SQL types

Type Definitions

Derive Macros

  • Implement numeric operators for the current query node
  • Implement necessary traits for adding a new sql type